Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886944 | Pressure or draw bar of fiber-reinforced insulating material | Hans-Gunther Christopher, Joachim Thurk, Dieter Noack | 1989-12-12 |
| 4805881 | Internal gas generator for heat treating furnace | Deane A. Horne, Stephen J. Sikirica, James William Bender | 1989-02-21 |